/*
 * Created on 15-Jun-2004
 * Created by Paul Gardner
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

package com.aelitis.net.upnp.impl.services;

/**
 * @author parg
 *
 */

import org.gudy.azureus2.plugins.utils.xml.simpleparser.SimpleXMLParserDocument;
import org.gudy.azureus2.plugins.utils.xml.simpleparser.SimpleXMLParserDocumentNode;

import com.aelitis.net.upnp.UPnPException;
import com.aelitis.net.upnp.UPnPService;
import com.aelitis.net.upnp.UPnPStateVariable;
import com.aelitis.net.upnp.impl.device.UPnPDeviceImpl;

public class UPnPStateVariableImpl implements UPnPStateVariable {
    protected UPnPServiceImpl service;
    protected String name;

    protected UPnPStateVariableImpl(UPnPServiceImpl _service, SimpleXMLParserDocumentNode node) {
        service = _service;

        name = node.getChild("name").getValue().trim();
    }

    public String getName() {
        return (name);
    }

    public UPnPService getService() {
        return (service);
    }

    public String getValue()

    throws UPnPException {
        try {
            String soap_action = "urn:schemas-upnp-org:control-1-0#QueryStateVariable";

            String request =
                    "<?xml version=\"1.0\" encoding=\"utf-8\"?>"
                            + "<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\" s:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\">"
                            + "<s:Body>";

            request +=
                    "<u:QueryStateVariable xmlns:u=\"urn:schemas-upnp-org:control-1-0\">" + "<u:varName>" + name + "</u:varName>"
                            + "</u:QueryStateVariable>";

            request += "</s:Body>" + "</s:Envelope>";

            SimpleXMLParserDocument resp_doc = ((UPnPDeviceImpl) service.getDevice()).getUPnP().performSOAPRequest(service, soap_action, request);

            SimpleXMLParserDocumentNode body = resp_doc.getChild("Body");

            SimpleXMLParserDocumentNode fault = body.getChild("Fault");

            if (fault != null) {

                throw (new UPnPException("Invoke fails - fault reported: " + fault.getValue()));
            }

            SimpleXMLParserDocumentNode resp_node = body.getChild("QueryStateVariableResponse");

            if (resp_node == null) {

                throw (new UPnPException("Invoke fails - response missing: " + body.getValue()));
            }

            SimpleXMLParserDocumentNode value_node = resp_node.getChild("return");

            return (value_node.getValue());

        } catch (Throwable e) {

            if (e instanceof UPnPException) {

                throw ((UPnPException) e);
            }

            throw (new UPnPException("Invoke fails", e));
        }
    }
}